论文信息 - Danish and Greek Web Search Experiments with Hummingbird SearchServerTM at CLEF 2005

Danish and Greek Web Search Experiments with Hummingbird SearchServerTM at CLEF 2005

Hummingbird participated in the WebCLEF mixed monolingual retrieval task of the Cross-Language Evaluation Forum (CLEF) 2005. In this task, the system was given 547 known-item queries from 11 languages (134 Spanish, 121 English, 59 Dutch, 59 Portuguese, 57 German, 35 Hungarian, 30 Danish, 30 Russian, 16 Greek, 5 Icelandic and 1 French). The goal was to find the desired page in the 82GB EuroGOV collection (3.4 million pages crawled from government sites of 27 European domains). Our experiments found that stopword processing was more important than anticipated, perhaps because words common in one language may tend to be overweighted by inverse document frequency in a mixed language collection. Extra weight on the document title helped significantly, and extra weight on less deep urls significantly helped home page queries. Stemming was of neutral impact on average, but it made a substantial difference for some individual queries. We analyze several Danish and Greek queries in detail.

Stephen Tomlinson | Stephen Tomlinson

[1] Stephen E. Robertson,et al. Okapi at TREC-3 , 1994, TREC.

[2] M. de Rijke,et al. EuroGOV: Engineering a Multilingual Web Corpus , 2005, CLEF.

[3] Stephen Tomlinson. Experiments in Named Page Finding and Arabic Retrieval with Hummingbird SearchServerTM at TREC 2002 , 2002, TREC.

[4] Stephen Tomlinson,et al. Robust, Web and Terabyte Retrieval with Hummingbird SearchServer at TREC 2004 , 2004, TREC.

[5] Stephen Tomlinson. Bulgarian and Hungarian Experiments with Hummingbird SearchServerTM at CLEF 2005 , 2005, CLEF.

[6] Djoerd Hiemstra,et al. Retrieving Web Pages Using Content, Links, URLs and Anchors , 2001, TREC.

[7] Fredric C. Gey,et al. Accessing Multilingual Information Repositories, 6th Workshop of the Cross-Language Evalution Forum, CLEF 2005, Vienna, Austria, 21-23 September, 2005, Revised Selected Papers , 2006, CLEF.

[8] M. de Rijke,et al. Overview of WebCLEF 2005 , 2005, CLEF.